block: remove unused function blk_bio_map_sg

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 0 insertions, 29 deletions

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 9476b1528ded..fc1ff3b1ea1f 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -283,35 +283,6 @@ int blk_rq_map_sg(struct request_queue *q, struct request *rq,
 }
 EXPORT_SYMBOL(blk_rq_map_sg);
 
-/**
- * blk_bio_map_sg - map a bio to a scatterlist
- * @q: request_queue in question
- * @bio: bio being mapped
- * @sglist: scatterlist being mapped
- *
- * Note:
- *    Caller must make sure sg can hold bio->bi_phys_segments entries
- *
- * Will return the number of sg entries setup
- */
-int blk_bio_map_sg(struct request_queue *q, struct bio *bio,
-                   struct scatterlist *sglist)
-{
-        struct scatterlist *sg = NULL;
-        int nsegs;
-        struct bio *next = bio->bi_next;
-        bio->bi_next = NULL;
-
-        nsegs = __blk_bios_map_sg(q, bio, sglist, &sg);
-        bio->bi_next = next;
-        if (sg)
-                sg_mark_end(sg);
-
-        BUG_ON(bio->bi_phys_segments && nsegs > bio->bi_phys_segments);
-        return nsegs;
-}
-EXPORT_SYMBOL(blk_bio_map_sg);
-
 static inline int ll_new_hw_segment(struct request_queue *q,
                                     struct request *req,
                                     struct bio *bio)